Maryland

Since your tape deck has no "mic in" jack you must revert to bringing music into your tape deck through the RCA jacks that now connect your tape deck to your stereo.
The "phones" jack of your stereo is not an input source and you can't use it. You need to see how your tape deck attaches to your stereo. If you have 2 cables coming out of your tape deck that plug into your stereo,then these are RCA jacks. You need to buy a cable that connects your keyboard to these RCA jacks. My guess is that your keyboard also has 2 "line out" jacks. A "left" and a "right" I suggest that you buy 2 cables, one for each line out jack. You want to connect the "line out" from your keyboard to the "line in" of you tape deck. The cable(s) you buy will need to have a 1/4 inch jack on one end, and a female RCA jack on the other. Insert the 1/4 inch jack into the "line out" of your keyboard, and the female RCA jack onto the male RCA plug coming out of your tape decks "Line in"(the record line) If you want to record in stereo, buy 2 cables and attach them. I suggest, as I did in my previous post that you buy high quality cables. You can expect to pay anywhere from 10-25 dollars per cable. If you go to a local music store and tell them what you are trying to do, the sales person will be able to help you.
snoid

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snoid